Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 112 for “"stream water"”.
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Improving the accessibility of in-stream water wheels
… of pico-hydropower, and specifically the in-stream water wheel, within resource-constrained communities as a method of renewable energy that is in alignment with the United Nations’ Sustainable Development Goal 7. This is achieved through a range of investigative techniques, including …
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Stream water and soil water chemistry after the Table Mountain wildfire, Washington, USA
… concentrations were made to investigate how stream water and soil water chemistry changed over 16 months following the Table Mountain wildfire. Sites with different burn severity were also compared. The fire occurred in 2012 in Kittitas County, north of Ellensburg, Washington. Samples were …
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Evaluating changes in strontium chemistry of stream water in response to environmental stress
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1995.
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Relationships Between Landscape, Spatial Scale, and Stream Water Chemistry in a Subtropical Karst System
… river characteristics, including surface water chemistry (Allan, 2004). Converting natural vegetation for urban and agricultural land use can alter water chemistry, creating a loss of biodiversity and reduced human consumptive and recreational use (Osborne and Wiley, 1988; Johnson et al., …
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Biomonitoring of Stream Water Quality: Comparative Sensitivities of Macroinvertebrate Indices and Leaf Decomposition Rates
… if both measures are sensitive to variation in water quality. Eight sites in the James River and its tributaries in southwest Missouri were sampled during summer 2001 and spring 2002 and compared with existing water chemistry data. Results revealed that leaf decomposition rates did not correlate …
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Off-stream water sources for grazing cattle as a stream bank stabilization and water quality BMP
… conducted in order to evaluate cattle behavior, stream bank erosion and water quality due to the installation of off-stream water sources for grazing cattle as an alternative to stream bank fencing. The study was located on two commercial cow-calf operations in southwest Virginia which utilized …
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Stream water quality corridor assessment and management using spatial analysis techniques: Introduction, evaluation, and implementation of the WQCM model.
… often produces detrimental effects on surface water quality entering local reservoirs through vulnerable stream channels. This study presents a methodology that incorporates geographic information systems (GIS) and remote sensing techniques for the creation of a stream corridor evaluation …
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The impact of harvesting and site preparation on nutrient dynamics, soil erosion and stream water quality in the Virginia Piedmont
… evaluated in the Virginia Piedmont using gauged watersheds. The four treatments were: 1) control, 2) chop and burn, 3) shear-disc, and 4) shear, rake-pile, disc. A combination of soil solution, streamwater and soil sampling and a series of soil incubations, both laboratory and <i>in situ</i> …
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Effects of Forestry Streamside Management Zones on Stream Water Quality, Channel Geometry, Soil Erosion, and Timber Management in the Virginia Piedmont
… objectives include determining if a 50-foot streamside management zone (SMZ) as described in the Virginia BMP Manual (VDOF 2002) is generally sufficient to protect stream water quality, riparian soils, and stream bank integrity in headwater streams where forest harvesting has taken place, as …
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Interannual Variability of Lotic Macroinvertebrate Communities in the Kootenay-Columbia Basin, BC: the Relative Contribution of Environmental Gradients vs. Stream Water Temperatures
Climate change is predicted to impact freshwater ecosystems through interannual variability in surface water temperature, discharge, and physiochemical water characteristics. Benthic macroinvertebrate communities (BMI) are often used to assess biological impacts of long-term environmental changes. …
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Post-implementation re-assessment of agricultural best management practices on watersheds of Conesus Lake: Effects on stream water chemistry and aquatic macroinvertebrate communities
… is the third largest source of impairment of water quality in rivers and second largest in lakes in the US according to the Environmental Protection Agency (EPA). Agricultural best management practices (BMPs) are intended to improve water quality, reduce sediment and nutrient runoff, and …
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Response of farmers' decisions and stream water quality to price incentives for nitrogen reduction, carbon abatement, and miscanthus cultivation: predictions based on agent-based modeling coupled with water quality modeling
… the effects in turn of these decisions on water quality, namely stream nitrate load. Given that agriculture is the single largest source of nitrogen in surface waters and is a major contributor to hypoxia in coastal ecosystems and eutrophication in streams and lakes, this study is motivated …
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Hydrochemical dynamics on sub-Antarctic Marion Island
… Mg²⁺, K⁺, Na⁺, Cl⁻ , SO4²⁻, NO³⁻). In addition, stream water physicochemistry (pH, water temperature, dissolved oxygen and total dissolved solids) was monitored in situ at a single site in the stream at 5 minute resolution for the duration of the field campaign. Monthly precipitation δ²H and δ¹⁸O …
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Flow and reactive transport modeling at the stream-groundwater interface
Stream water and groundwater are important fresh water resources but their water quality is deteriorated by harmful solutes introduced by human activities. The interface between stream water and the subsurface water is an important zone for retention, transformation and attenuation of these …
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Biogeochemical Consequences of Hydrologic Conditions in a Tropical Montane Rain Forest in Ecuador
… in delta 18O values of the soil solution and the stream water are smaller (-9.1 to -3.0 and -5.8 to -8.7 per mil) than those of rainfall, throughfall, and lateral flow. The delta 18O values in stream water increased immediately after an intense rainstorm event to isotope values similar to those of …
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Assessing the behavioral response of Westslope Cutthroat Trout to olfactory cues in a two-choice Y-maze
… produced by WCT from the second population, and water obtained from each population’s natal stream. The water Kings Lake WCT were reared in for one year at the Spokane Hatchery was also used. A meta-regression was used to determine if WCT preferred an arm in the Y-maze when no odor was present, …
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Spectral Reflectance as an Indicator of Water Quality in Streams Impacted by Mine Drainage
Stream water pH and dissolved sulfate concentrations were estimated from the spectral reflectance of the resident mine drainage sediments. Mine drainage sediments were collected from sites in the anthracite coal region of eastern Pennsylvania,representing acid to near neutral pH. Sediment color was …
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